Apparatus and method for acquisition of system information in wireless communications

Patent metadata

Field	Value
Publication number	US-11218950-B2
Application number	US-201916440330-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 15, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A wireless terminal communicates over a radio interface with a radio access node of a radio access network (RAN). The wireless terminal comprises receiver circuitry and processor circuitry. The receiver circuitry is configured to receive system information (SI) from the radio access node. The processor circuitry configured to perform an SI message acquisition process to acquire the system information, and terminate the SI message acquisition process after attempting SI message acquisition in accordance with configured information. The configured information may be a first number of modification periods or a prescribed number of transmission opportunities.

First claim

What is claimed is:

1. A wireless terminal that communicates over a radio interface with a radio access node of a radio access network (RAN), the wireless terminal comprising:
receiver circuitry configured to receive a first type system information (SI) block (SIB), the first type SIB comprising:
availability and scheduling information of an SI message the SI message comprising at least one second type SIB, the scheduling information further comprising:
a periodicity of SI windows associated with the SI message, each of the SI windows being a duration where broadcast of the SI message may incur;
a length of each of the SI windows; and
a number of modification periods allowed for an acquisition process of the SI message, each of the modification periods being a time period where contents of the system information is unchanged;

processor circuitry configured to perform, based on the scheduling information, the acquisition process of the SI message within the SI windows, wherein;
the acquisition process of the SI message is terminated after the number of modification periods consumed without a successful reception of the SI message.

2. The wireless terminal of claim 1 , wherein the modification periods indicated by the number of modification periods include a modification period during which the acquisition process of the SSI message is initiated.

3. A radio access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal, the radio access node comprising:
transmitter circuitry configured to transmit a first type system information (SI) block (SIB), the first type SIB comprising:
availability and scheduling information of an SI message, each of the SI message comprising at least one second type SIB, the scheduling information further comprising:
a periodicity of SI windows associated with the SI message, each of the SI windows being a duration where broadcast of the SI message may occur;
a length of each of the SI windows; and
a number of modification periods allowed for an acquisition process of the SI message, each of the modification periods being a time period where contents of the system information is unchanged;

processor circuitry configured to generate the SI message; and
the transmitter circuitry is further configured to transmit the SI message based on the scheduling information, wherein
the acquisition process of the SI message is performed within the SI windows; and,
the acquisition process of the SI message is terminated after the number of modification periods consumed without a successful reception of the SI message.

4. The radio access node of claim 3 , wherein the modification periods indicated by the number of modification periods include a modification period during which the acquisition process of the SI message is initiated.

5. A method for a wireless terminal that communicates over a radio interface with a radio access node of a radio access network (RAN), the method comprising:
receiving a first type system information (SI) block (SIB), the first type SIB comprising:
availability and scheduling information of an SI message, each of the SI message comprising at least one second type SIB, the scheduling information further comprising:
a periodicity of SI windows associated with the SI message, each of the SI windows being a duration where broadcast of the SI message may occur;
a length of each of the SI windows; and,
a number of modification periods allowed for an acquisition process of the SI message, each of the modification periods being a time period where contents of the system information is unchanged;

performing, based on the scheduling information, the acquisition process of the SI message within the SI windows, wherein;
the acquisition process of the SI message is terminated after the number of modification periods consumed without a successful reception of the SI message.

6. The method of claim 5 , wherein the modification periods indicated by the number of modification periods include a modification period during which the acquisition process of the SI message is initiated.

7. A method for a radio access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal, comprising:
transmitting a first type system information (SI) block (SIB), the first type SIB comprising:
availability and scheduling information of an SI message each of the SI message comprising at least one second type SIB, the scheduling information further comprising:
a periodicity of SI windows associated with the SI message, each of the SI windows being a duration where broadcast of the SI message may occur;
a length of each of the SI windows; and
a number of modification periods allowed for an acquisition process of the SI message, each of the modification periods being a time period where contents of the system information is unchanged;

generating the SI message; and,
further transmitting the SI message based on the scheduling information, wherein;
the acquisition process of the SI message is performed within the SI windows; and,
the acquisition process of the SI message is terminated after the number of modification periods consumed without a successful reception of the SI message.

8. The method of claim 7 , wherein the modification periods indicated by the number of modification periods include a modification period during which the acquisition process of the SI message initiated.

Assignees

• Sharp Laboratories America Inc
• Fg innovation co ltd

Inventors

• Ishii Atsushi

Classifications

• H04W4/06 Primary

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W48/14

  using user query {or user detection} · CPC title